DotNet andd C++ example

Program.cs

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+using System;
+using System.Runtime.InteropServices;
+
+namespace DotnetAndCPP
+{
+    class Program
+    {
+        static void Main(string[] args)
+        {
+	    var a = 54;
+	    var b = 23;
+
+	    var result = add(a, b);
+
+	    Console.WriteLine($"a: {a} + b: {b} = {result}");
+        }
+
+	[DllImport("libTestExample.so")]
+	public static extern int add(int a, int b);
+    }
+}